U.S. patent application number 17/827727 was filed with the patent office on 2022-09-08 for antenna system and base station.
This patent application is currently assigned to HUAWEI TECHNOLOGIES CO., LTD.. The applicant listed for this patent is HUAWEI TECHNOLOGIES CO., LTD.. Invention is credited to Jianping Li, Tao Pu, Weihong Xiao, Runxiao Zhang.
Application Number | 20220285858 17/827727 |
Document ID | / |
Family ID | 1000006422370 |
Filed Date | 2022-09-08 |
United States Patent
Application |
20220285858 |
Kind Code |
A1 |
Xiao; Weihong ; et
al. |
September 8, 2022 |
ANTENNA SYSTEM AND BASE STATION
Abstract
This application provides an antenna system. The antenna system
includes a first reflection panel, a first antenna array, and a
second antenna array. The first antenna array and the second
antenna array are stacked on the first reflection panel. The first
antenna array and the second antenna array share the first
reflection panel. The first antenna array and the second antenna
array operate on different frequency bands.
Inventors: |
Xiao; Weihong; (Dongguan,
CN) ; Li; Jianping; (Dongguan, CN) ; Pu;
Tao; (Shanghai, CN) ; Zhang; Runxiao;
(Dongguan, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
HUAWEI TECHNOLOGIES CO., LTD. |
Shenzhen |
|
CN |
|
|
Assignee: |
HUAWEI TECHNOLOGIES CO.,
LTD.
Shenzhen
CN
|
Family ID: |
1000006422370 |
Appl. No.: |
17/827727 |
Filed: |
May 29, 2022 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/CN2019/122283 |
Nov 30, 2019 |
|
|
|
17827727 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01Q 5/30 20150115; H01Q
9/0414 20130101; H01Q 21/28 20130101 |
International
Class: |
H01Q 21/28 20060101
H01Q021/28; H01Q 5/30 20060101 H01Q005/30; H01Q 9/04 20060101
H01Q009/04 |
Claims
1. An antenna system, comprising: a first reflection panel; a first
antenna array; and a second antenna array, the first antenna array
and the second antenna array being stacked on the first reflection
panel, the first antenna array and the second antenna array sharing
the first reflection panel, wherein the first antenna array and the
second antenna array operate on different frequency bands.
2. The antenna system according to claim 1, further comprising a
second feeding network feeding the second antenna array, wherein
the second feeding network is disposed between the second antenna
array and the first antenna array.
3. The antenna system according to claim 1, further comprising a
radome, wherein the first antenna array, the second antenna array,
and the second feeding network are disposed in the radome.
4. The antenna system according to claim 3, wherein the radome
comprises a first radome and a second radome, the first antenna
array and the first reflection panel are disposed in the first
radome, and the second antenna array and the second feeding network
are disposed in the second radome.
5. The antenna system according to claim 1, further comprising a
second reflection panel, wherein: the second antenna array
comprises a first part of second antennas and a second part of
second antennas; the first part of second antennas and the first
antenna array are stacked on the first reflection panel; and the
second part of second antennas are disposed on the second
reflection panel.
6. The antenna system according to claim 5, further comprising a
third antenna array, wherein the first antenna array, the second
antenna array, and the third antenna array operate on different
frequency bands; and the third antenna array and the second part of
second antennas are stacked on the second reflection panel.
7. The antenna system according to claim 6, further comprising a
first radome and a second radome; the first antenna array and the
first reflection panel are disposed in the first radome; and the
second antenna array, the second feeding network, the third antenna
array, and the second reflection panel are disposed in the second
radome.
8. The antenna system according to claim 6, further comprising a
first radome and a second radome; the first part of second
antennas, the second feeding network, the first antenna array, and
the first reflection panel are disposed in the first radome; and
the second part of second antennas, the third antenna array, and
the second reflection panel are disposed in the second radome.
9. The antenna system according to claim 8, further comprising a
phase shifter connected to the second feeding network, wherein the
phase shifter is disposed in the second radome, and the first part
of second antennas located in the first radome are connected to the
phase shifter through a jumper.
10. The antenna system according to claim 6, further comprising a
fourth antenna array, wherein the first antenna array, the second
antenna array, the third antenna array, and the fourth antenna
array operate on different frequency bands; and the fourth antenna
array, the second antenna array, and the third antenna array are
stacked on the second reflection panel.
11. A base station, comprising: an antenna system; and a digital
phase shifter connected to the antenna system; the antenna system
comprises: a first reflection panel; a first antenna array; and a
second antenna array, the first antenna array and the second
antenna array being stacked on the first reflection panel, the
first antenna array and the second antenna array sharing the first
reflection panel, wherein the first antenna array and the second
antenna array operate on different frequency bands.
12. The base station according to claim 11, wherein the antenna
system further comprises a second feeding network feeding the
second antenna array, wherein the second feeding network is
disposed between the second antenna array and the first antenna
array.
13. The base station according to claim 12, wherein the antenna
system further comprises a radome, wherein the first antenna array,
the second antenna array, and the second feeding network are
disposed in the radome.
14. The base station according to claim 13, wherein the radome
comprises a first radome and a second radome, the first antenna
array and the first reflection panel are disposed in the first
radome, and the second antenna array and the second feeding network
are disposed in the second radome.
15. The base station according to claim 11, wherein the antenna
system further comprises a second reflection panel, wherein: the
second antenna array comprises a first part of second antennas and
a second part of second antennas; the first part of second antennas
and the first antenna array are stacked on the first reflection
panel; and the second part of second antennas are disposed on the
second reflection panel.
16. The base station according to claim 15, wherein the antenna
system further comprises a third antenna array, wherein the first
antenna array, the second antenna array, and the third antenna
array operate on different frequency bands; and the third antenna
array and the second part of second antennas are stacked on the
second reflection panel.
17. The base station according to claim 16, wherein the antenna
system further comprises a first radome and a second radome; the
first antenna array and the first reflection panel are disposed in
the first radome; and the second antenna array, the second feeding
network, the third antenna array, and the second reflection panel
are disposed in the second radome.
18. The base station according to claim 16, wherein the antenna
system further comprises a first radome and a second radome; the
first part of second antennas, the second feeding network, the
first antenna array, and the first reflection panel are disposed in
the first radome; and the second part of second antennas, the third
antenna array, and the second reflection panel are disposed in the
second radome.
19. The base station according to claim 18, wherein the antenna
system further comprises a phase shifter connected to the second
feeding network, wherein the phase shifter is disposed in the
second radome, and the first part of second antennas located in the
first radome are connected to the phase shifter through a
jumper.
20. The base station according to claim 16, wherein the antenna
system further comprises a fourth antenna array, wherein the first
antenna array, the second antenna array, the third antenna array,
and the fourth antenna array operate on different frequency bands;
and the fourth antenna array, the second antenna array, and the
third antenna array are stacked on the second reflection panel.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of International
Application No. PCT/CN2019/122283, filed on Nov. 30, 2019, the
disclosure of which is hereby incorporated by reference in its
entirety.
TECHNICAL FIELD
[0002] This application relates to the field of communication
technologies, and in particular, to an antenna system and a base
station.
BACKGROUND
[0003] With development of the communication industry, a
requirement on a communication frequency band of a base station is
increasingly high, and an operator expects that the base station
has more communication frequency bands. However, antenna
installation platform space resources on a site of the operator are
limited. Therefore, when a base station is being configured,
multi-band antennas of the base station uses a solution such as
nesting or stacking to increase operating frequency bands of the
base station. However, in a conventional technology, when antennas
of different frequency bands are placed together in a nested or
stacked manner, it is difficult to add an antenna of another
frequency band to the base station once the base station is
constructed.
SUMMARY
[0004] This application provides an antenna system and a base
station to improve communication performance of the base
station.
[0005] According to a first aspect, an antenna system is provided.
The antenna system includes at least two antenna arrays operating
on different frequency bands: a first antenna array and a second
antenna array, where the first antenna array operates on a first
operating frequency band, and the second antenna array operates on
a second operating frequency band. For example, the first antenna
array is a 5G antenna, and the second antenna array is a 2G, 3G, or
4G antenna. The antenna system further includes a first reflection
panel. The first antenna array and the second antenna array are
stacked on the first reflection panel, and the first antenna array
and the second antenna array share the first reflection panel.
During assembly, the second antenna array may be an antenna
existing on a base station in a conventional technology, and the
first antenna array is additional 5G antennas. The first antenna
array and the first reflection panel form a module. The module is
disposed on a side of the second antenna array that is away from a
radiation area. The second antenna array and the first antenna
array share the first reflection panel. As can be learned from the
foregoing description, according to the antenna system provided in
this embodiment of this application, different modules may be added
as required to improve communication performance of the existing
base station, thereby reducing costs of refitting the base
station.
[0006] In an embodiment, a second feeding network feeding the
second antenna array is further included, and the second feeding
network is disposed between the second antenna array and the first
antenna array. Disposing the second feeding network between the
first antenna array and the second antenna array facilitates
arrangement of the first antenna array and the first reflection
panel.
[0007] In an embodiment, a radome is further included. The first
antenna array, the second antenna array, and the second feeding
network are disposed in the radome. The first antenna array and the
second antenna array are protected by the disposed radome, thereby
improving security of the two antenna arrays.
[0008] In an embodiment, the radome includes a first radome and a
second radome. The first antenna array and the first reflection
panel are disposed in the first radome. The second antenna array
and the second feeding network are disposed in the second radome.
The first antenna array and the second antenna array are separately
protected by different radomes.
[0009] In an embodiment, there is one radome. The first antenna
array, the second feeding network, and the second antenna array are
disposed in one radome. The first antenna array and the second
antenna array are protected together by one radome.
[0010] In an embodiment, a second reflection panel is further
included. The second antenna array includes a first part of second
antennas and a second part of second antennas. The first part of
second antennas and the first antenna array are stacked on the
first reflection panel, and the second part of second antennas are
disposed on the second reflection panel. Some signals of the second
antenna array are reflected by disposing the second reflection
panel, thereby increasing a quantity of second antennas in the
second antenna array.
[0011] In an embodiment, the first reflection panel and the second
reflection panel are arranged along a second direction. The second
direction is perpendicular to a first direction, and the first
direction is a direction in which the first antenna array and the
second antenna array are stacked. In this way, the quantity of
second antennas in the second antenna array is increased, and a
radiation effect from the second reflection panel on the first
antenna array is avoided.
[0012] In an embodiment, a third antenna array is further included.
The first antenna array, the second antenna array, and the third
antenna array operate on different frequency bands. The third
antenna array and the second part of second antennas are stacked on
the second reflection panel. In this way, a communication coverage
frequency band of the antenna system is increased.
[0013] In an embodiment, a radome is further included. The radome
includes a first radome and a second radome. The first antenna
array and the first reflection panel are disposed in the first
radome. The second antenna array, the second feeding network, the
third antenna array, and the second reflection panel are disposed
in the second radome. The first antenna array, the second antenna
array, and the third antenna array are separately protected by the
first radome and the second radome.
[0014] In an embodiment, a radome is further included. The radome
includes a first radome and a second radome. The first part of
second antennas, the second feeding network, the first antenna
array, and the first reflection panel are disposed in the first
radome. The second part of second antennas, the third antenna
array, and the second reflection panel are disposed in the second
radome. The first antenna array, the second antenna array, and the
third antenna array are separately protected by the first radome
and the second radome.
[0015] In an embodiment, a phase shifter connected to the second
feeding network is further included. The phase shifter is disposed
in the second radome, and the first part of second antennas located
in the first radome are connected to the phase shifter through a
jumper. A signal is sent to a second antenna by using the phase
shifter, and second antennas located in different radomes are
connected through jumpers.
[0016] In an embodiment, a fourth antenna array is further
included. The first antenna array, the second antenna array, the
third antenna array, and the fourth antenna array operate on
different frequency bands. The fourth antenna array, the second
antenna array, and the third antenna array are stacked on the
second reflection panel. In this way, a communication coverage
frequency band of the antenna system is increased.
[0017] According to a second aspect, a base station is provided.
The base station includes any one of the foregoing antenna systems
and a digital phase shifter connected to the antenna system.
According to the antenna system, different modules may be added as
required to improve communication performance of the existing base
station, thereby reducing costs of refitting the base station.
BRIEF DESCRIPTION OF DRAWINGS
[0018] FIG. 1 is a block diagram of a structure of an antenna
system according to an embodiment of this application;
[0019] FIG. 2 is a block diagram of a structure of another antenna
system according to an embodiment of this application;
[0020] FIG. 3 is a block diagram of a structure of another antenna
system according to an embodiment of this application;
[0021] FIG. 4 is a block diagram of a structure of another antenna
system according to an embodiment of this application;
[0022] FIG. 5 is a block diagram of a structure of another antenna
system according to an embodiment of this application;
[0023] FIG. 6 is a block diagram of a structure of another antenna
system according to an embodiment of this application; and
[0024] FIG. 7 is a block diagram of a structure of another antenna
system according to an embodiment of this application.
DESCRIPTION OF EMBODIMENTS
[0025] For ease of understanding an antenna system provided in
embodiments of this application, an application scenario of the
antenna system provided in the embodiments of this application is
described first. An example of the antenna system provided in this
application is applied to a base station. Construction of base
stations is an important part of investment of mobile communication
operators. The construction of base stations is generally performed
based on factors such as coverage, call quality, investment
benefit, construction difficulty, and maintenance convenience. With
development of mobile communication network services towards the
direction of digitization and packetization, the development trend
of mobile communication base stations is broadband and large
coverage. However, once a base station in a conventional technology
is built, an antenna of another antenna frequency band cannot be
added, or a relatively high expense needs to be spent to improve
the base station. Therefore, the embodiments of this application
provide an antenna system to improve a frequency band of a base
station and communication performance of the base station.
[0026] An antenna system provided in the embodiments of this
application includes at least two antenna arrays, and each antenna
array includes a plurality of antennas arranged in arrays. Each
antenna array operates on a different operating frequency band. For
example, if the antenna system includes a first antenna array and a
second antenna array, the first antenna array and the second
antenna array operate on two different operating frequency bands;
or if the antenna system includes a first antenna array, a second
antenna array, and a third antenna array 60, the first antenna
array, the second antenna array, and the third antenna array 60 all
operate on different operating frequency bands. The antenna system
provided in the embodiments of this application is described in
detail below with reference to the accompanying drawings. However,
it should be understood that antenna systems shown in the
accompanying drawings are merely implementations for ease of
describing the antenna system. In the antenna system provided in
the embodiments of this application, different antenna arrays may
be arranged in the deployment manners shown in the accompanying
drawings, and are not limited to the deployment schemes shown in
the figures.
[0027] As shown in FIG. 1, FIG. 1 shows an antenna system according
to an embodiment of this application. The antenna system includes a
first antenna array 20 and a second antenna array 10. The first
antenna array 20 and the second antenna array 10 are antennas
operating on different operating frequency bands. For example, the
first antenna array 20 is 5G antennas, and the second antenna array
10 is 2G, 3G, or 4G antennas. Alternatively, the first antenna
array 20 is 2G, 3G, or 4G antennas, and the second antenna array 10
is 5G antennas.
[0028] The first antenna array 20 includes a plurality of first
antennas 21 arranged in arrays. Only one column of first antennas
are shown in FIG. 1. However, it should be understood that a
quantity of columns of first antennas 21 is not limited in this
embodiment of this application. A plurality of columns of first
antennas 21 may be selectively disposed as required, for example,
two columns, three columns, or four columns of first antennas 21.
When the first antenna array 20 operates, the first antenna array
20 is fed through a first feeding network (not shown in the
figure).
[0029] The second antenna array 10 includes a plurality of second
antennas 11 arranged in arrays. Only one column of second antennas
11 are shown in FIG. 1. However, a quantity of second antennas 11
is not limited in this embodiment of this application. A plurality
of columns of second antennas 11 may be disposed as required, for
example, two columns, three columns, or four columns of second
antennas 11. When the second antenna array 10 operates, the second
antenna array 10 is fed by a second feeding network 12. The second
feeding network 12 is connected to a plurality of second
antennas.
[0030] Still refer to FIG. 1. The antenna system further includes a
first reflection panel 30. The first antenna array 20 and the
second antenna array 10 are stacked on the first reflection panel
30 along a first direction. In FIG. 1, the direction indicated by
the arrow is the first direction, and the first direction is a
direction perpendicular to a reflection surface of the first
reflection panel 30. As shown in FIG. 1, the first antennas 21 in
the first antenna array 20 are fixedly disposed on the reflection
surface of the first reflection panel 30, and the first feeding
network is disposed on a side of the first reflection panel 30 that
is away from the reflection surface. The second antennas 11 in the
second antenna array 10 and the second feeding network 12 are
disposed at positions away from the first reflection panel 30. As
shown in FIG. 1, the second feeding network 12 is disposed between
the second antenna array 10 and the first antenna array 20.
[0031] Still refer to FIG. 1. As can be learned from FIG. 1, the
first antenna array 20 and the first reflection panel 30 are
disposed as a whole, and therefore, may be used as one module. The
second antenna array 10, the first antenna array 20, and the first
reflection panel 30 are disposed at intervals. For example, an
antenna array is disposed on an existing base station. When the
first antenna array 20 needs to be added, a reflection panel of the
existing antenna array is removed, and antennas in the existing
antenna array are fastened by using a reinforcing structure (such
as a radome or a support frame). Then, a module including the added
antenna array and a reflection panel is added to a side of the
antenna array that is opposite to the first direction, to form the
structure shown in FIG. 1. The first antenna array 20 is the
existing antenna array, and the second antenna array 10 is the
added antenna array. Alternatively, an added antenna array is
directly disposed in front of (a side indicated by the first
direction) an existing antenna array, to form the structure shown
in FIG. 1. The existing antenna array may be the first antenna
array 20 in FIG. 1, and the added antenna array may be the second
antenna array 10. By using the foregoing manner, the base station
does not need to be refit in a large scale, thereby facilitating
addition of a communication frequency band of the base station and
improving a communication effect of the base station.
[0032] Refer to FIG. 2. FIG. 2 shows another implementation of an
antenna system. For a same reference number in FIG. 2, refer to the
reference number in FIG. 1. For a first antenna array 20 and a
second antenna array 10 shown in FIG. 2, refer to the related
descriptions of the first antenna array 20 and the second antenna
array 10 in FIG. 1. Still refer to FIG. 2. In addition to the first
antenna array 20 and the second antenna array 10 shown in FIG. 1,
the antenna system shown in FIG. 2 further includes a first radome
40a and a second radome 50a. The first radome 40a and the second
radome 50a are arranged in a first direction. The second antennas
11 in the second antenna array 10 and the second feeding network 12
are both disposed in the second radome 50a. The first antenna array
and the first reflection panel 30 are disposed in the first radome
40a. FIG. 2 further shows a first phase shifter 22 of the first
antenna array 20. The first phase shifter 22 is disposed in the
first radome 40a, and the first phase shifter 22 is connected to a
plurality of first antennas 21 through a first feeding network and
transmits a signal to the first antennas 21. As can be learned from
FIG. 2, the first antenna array 20 and the first reflection panel
30 form one module by using the first radome 40a. During assembly,
the first radome 40a may be directly disposed on a side of the
second radome 50a that is opposite to the first direction.
[0033] As shown in FIG. 3, FIG. 3 is a modification of the antenna
system shown in FIG. 2. In an antenna system shown in FIG. 3, a
first antenna array 20 and a second antenna array 10 are the same
as the first antenna array 20 and the second antenna array 10 in
FIG. 2. A difference is that only one first radome 40b is disposed
in FIG. 3; and the second antenna array 10, a second feeding
network 12, the first antenna array 20, and a first reflection
panel 30 are sequentially arranged along a first direction and are
disposed in a same radome (the first radome 40b). It should be
understood that the examples of the antenna systems shown in FIG. 2
and FIG. 3 may be selectively disposed based on actual conditions.
Different antenna arrays may be disposed in different radomes or a
same radome. This is not limited in this embodiment of this
application.
[0034] As shown in FIG. 4, FIG. 4 shows an example of an
implementation in which an antenna system includes three antenna
arrays. For a same reference number in FIG. 4, refer to the same
reference number in FIG. 1. The antenna system shown in FIG. 4
includes a first antenna array 20, a second antenna array 10, and a
third antenna array 60. As shown in FIG. 4, first antennas 21 in
the first antenna array 20 are disposed on a first reflection panel
30 and are connected to a first phase shifter 22 through a first
feeding network. The first antenna array 20, the first reflection
panel 30, and the first phase shifter 22 are disposed in a first
radome 40c. A plurality of second antennas 11 in the second antenna
array 10 are divided into two parts, which are a first part of
second antennas 11a and a second part of second antennas 11b. The
first part of second antennas 11a include a plurality of second
antennas 11a, and the second part of second antennas 11b include a
plurality of second antennas 11b. The first part of second antennas
11a and a second feeding network 12 correspondingly connected to
the first part of second antennas 11a are disposed in a second
radome 50c. Still refer to FIG. 4, the third antenna array 60
includes a plurality of third antennas 61, and the third antenna
array 60 is fed by a third feeding network. The second part of
second antennas 11b and the third antenna array 60 are disposed on
a second reflection panel 70; and the second part of second
antennas 11b, the third antenna array 60, and the second reflection
panel 70 are arranged in a first direction. The second part of
second antennas 11b, the third antenna array 60, and the second
reflection panel 70 are disposed in a third radome 90. In the
antenna system shown in FIG. 4, a second phase shifter 13 and a
third phase shifter 62 are further shown. The second phase shifter
13 and the third phase shifter 62 are arranged in the third radome
90 along the first direction. The second phase shifter 13 is
connected to the second phase shifter 13 through the second feeding
network corresponding to the second part of second antennas 11b.
The second feeding network 12 corresponding to the first part of
second antennas 11a is connected to the second phase shifter 13
through a jumper 100 between the second radome 50c and the third
radome 90. The third antenna array 60 is connected to the third
phase shifter 62 through a third feeding network.
[0035] Still refer to FIG. 4. The first radome 40c and the second
radome 50c are arranged along a first direction; and the first
radome 40c, the second radome 50c, and the third radome 90 are
arranged along a second direction. As shown in the directions
indicated by the arrows in FIG. 4, the second direction is a
direction perpendicular to the first direction. In the antenna
system shown in FIG. 4, the first reflection panel 30 and the
second reflection panel 70 are also arranged along the second
direction, so that the second reflection panel 70 and the first
antenna array 20 are staggered in space, in other words, the second
reflection panel 70 is in an area in which the plurality of first
antennas 21 are not overlapped, to prevent the second reflection
panel 70 from blocking signal radiation of the first antennas 21,
and reduce impact from the second reflection panel 70 on the first
antennas 21.
[0036] An arrangement manner for the radome provided in the
embodiments of this application is not limited to the manner shown
in FIG. 4. When the first antenna array 20, the second antenna
array 10, and the third antenna array 60 are arranged in the manner
shown in FIG. 4, the radome shown in FIG. 3 may further be applied
to FIG. 4 to form the antenna system shown in FIG. 5. The first
radome 40c and the second radome 50c in FIG. 4 may be combined into
a first radome 40d, and another radome is a second radome 50d. The
first radome 40d and the second radome 50d are arranged along the
second direction. The first part of second antennas 11a, the first
antenna array 20, and the first reflection panel 30 are disposed in
the first radome. The second part of second antennas 11b, the
second reflection panel 70, and the second phase shifter 13 of the
second antenna array 10 are disposed in the second radome.
[0037] As shown in FIG. 6, FIG. 6 shows an example of another
implementation in which an antenna system includes three antenna
arrays. For a same reference number in FIG. 6, refer to the same
reference number in FIG. 4. The antenna system shown in FIG. 6
includes a first antenna array 20, a second antenna array 10, and a
third antenna array 60. Structures of the three antenna arrays are
the same as the structures shown in FIG. 4. Details are not
described herein again. The antenna system shown in FIG. 6 includes
two radomes, which are a first radome 40e and a second radome 50e.
As shown in FIG. 6, the second radome 50e is an L-shaped cover, the
upper right corner of the second radome 50e has a notch (an
arrangement direction of the antenna system in FIG. 6 is used as a
reference direction), and the first radome 40e is disposed at the
notch position of the second radome 50e. Still refer to FIG. 6. A
plurality of first antennas 21, the first reflection panel 30, and
the first phase shifter 22 are arranged in the first radome 40e
along a first direction. The second radome 50e is an L-shaped
structure. The first radome 40e is located at the notch position of
the second radome 50e. The first part of second antennas 11a are
located in the second radome 50e and are stacked with the first
antenna 21 and the first reflection panel 30 along the first
direction. The second part of second antennas 11b, the third
antenna array 60, the second reflection panel 70, the third phase
shifter 62, and the second phase shifter 13 are stacked in the
second radome 50e along the first direction.
[0038] As shown in FIG. 7, FIG. 7 shows another structure of an
antenna system. For a reference number in FIG. 7, refer to the same
reference number in FIG. 6. A difference between the antenna system
shown in FIG. 7 and the antenna system shown in FIG. 6 is that a
fourth antenna array 80 is added to the antenna system shown in
FIG. 7. A first antenna array 20, a second antenna array 10, a
third antenna array 60, and the fourth antenna array 80 are antenna
arrays operating on different frequency bands. For example, the
operating frequency band of the first antenna array 20 is 5G, the
operating frequency band of the second antenna array 10 is 4G, the
operating frequency band of the third antenna array 60 is 3G, and
the operating frequency band of the fourth antenna array 80 is 2G.
Still refer to FIG. 7. The first antenna array 20, the second
antenna array 10, and the third antenna array 60 are disposed in a
manner the same as that shown in FIG. 6. Details are not described
herein again. The fourth antenna array 80, the second antenna array
10, and the third antenna array 60 are stacked on a second
reflection panel 70. For example, the fourth antenna array 80
includes a plurality of fourth antennas 81. A fourth phase shifter
82 feeds the fourth antenna array 80 through a fourth feeding
network. During arrangement of the fourth antenna array 80, the
fourth antenna array 80 and the third antenna array 60 are located
on a same side of the second reflection panel 70, and the fourth
antenna array 80 is fixedly disposed on the second reflection panel
70. The fourth phase shifter 82 and the fourth antennas 81 are
separately arranged on two sides of the second reflection panel
70.
[0039] It should be understood that the antenna arrays included in
the antenna systems shown in FIG. 4 to FIG. 7 are merely examples.
A quantity of antenna arrays and a combination manner are not
limited in the embodiments of this application. For example, the
antenna systems provided in the embodiments of this application may
use a manner shown in FIG. 6 in which the second antenna array 10
and the third antenna array 60 are disposed in one radome and the
first antenna array 20 is disposed in another radome, may use a
manner in which the second antenna array 10 is independently
disposed in one radome and the first antenna array 10 and the third
antenna array 60 are disposed in one radome, may use a manner in
which the first antenna array 20 and the second antenna array 10
are disposed in one radome and the third antenna array 60 is
independently disposed in one radome, and so on. The first antenna
array 20, the second antenna array 10, and the third antenna array
60 may be randomly arranged as required. Corresponding radomes may
be accordingly assembled based on the arrangement manner for the
first antenna array 20, the second antenna array 10, and the third
antenna array 60.
[0040] An embodiment of this application further provides a base
station. The base station includes any one of the foregoing antenna
systems and a digital phase shifter connected to the antenna
system. As can be learned from the foregoing antenna systems, in
the base station provided in this embodiment of this application,
different modules may be added to the antenna systems as required
to improve communication performance of the existing base station,
thereby reducing costs of refitting the base station.
[0041] It is clear that a person skilled in the art can make
various modifications and variations to this application without
departing from the spirit and scope of this application. This
application is intended to cover these modifications and variations
of this application provided that they fall within the scope of
protection defined by the following claims and their equivalent
technologies.
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